<template>
    <div style="width: 500px">
        <el-input
                placeholder="输入部门名称进行搜索..."
                prefix-icon="el-icon-search"
                v-model="filterText">
        </el-input>

        <el-tree
                class="filter-tree"
                :data="deps"
                :props="defaultProps"
                :filter-node-method="filterNode"
                :expand-on-click-node="false"
                ref="tree">
               <span class="custom-tree-node" slot-scope="{ node, data }" style="display: flex;justify-content: space-between;width: 100%">
               <span>{{ data.name }}</span>
               <span>
               <el-button
                       type="primary"
                       size="mini"
                       class="depBtn"
                       @click="() => showAddDep(data)">
                       添加部门
               </el-button>
               <el-button

                       type="danger"
                       size="mini"
                       class="depBtn"
                       @click="() => deleteDep(data)">
                       删除部门
               </el-button>
               </span>
               </span>
        </el-tree>
        <el-dialog
                title="添加部门"
                :visible.sync="dialogVisible"
                width="30%">
            <div>
                <table>
                    <tr>
                        <td>
                            <el-tag>上级部门</el-tag>
                        </td>
                        <td>
                            {{pname}}
                        </td>
                    </tr>
                    <tr>
                        <td>
                            <el-tag>部门名称</el-tag>
                        </td>
                        <td>
                            <el-input v-model="dep.name" placeholder="输入部门名称"></el-input>
                        </td>
                    </tr>

                </table>
            </div>
                <span slot="footer" class="dialog-footer">
                <el-button @click="dialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="doAddDep">确 定</el-button>
  </span>
        </el-dialog>
    </div>
</template>

<script>
    export default {
        name: "DepMana",
        data(){
            return{
                filterText:'',
                deps:[],
                defaultProps: {
                    children: 'children',
                    label: 'name'
                },
                dialogVisible:false,
                dep:{
                    name:'',
                    parentId:-1
                },
                pname:''
            }

        },
        watch: {
            filterText(val) {
                this.$refs.tree.filter(val);
            }
        },
        mounted(){
            this.initDeps();
        },
        initDep(){
            this.dep={
                name:'',
                parentId: -1
            }
            this.pname='';
        },
        methods: {
            addDep2Deps(deps,dep){
                for(let i = 0;i<deps.length;i++){
                   let d = deps[i];
                   if(d.id==dep.parentId){
                     d.children = d.children.concat(dep);
                     if(d.children.length>0){
                         d.isParent=true
                     }
                     return;
                   }else {
                       this.addDep2Deps(d.children,dep)
                   }

                }
            },
            doAddDep(){
                if(this.dep.name){
                    this.postRequest('/system/basic/department/',this.dep).then(resp=>{
                        if(resp){
                            this.addDep2Deps(this.deps,resp.obj);
                            this.dialogVisible=false;

                        }
                    })
                }else {
                    this.$message.error('部门名称不能为空')
                }

            },
            showAddDep(data){
               this.pname = data.name;
               this.dep.parentId = data.id;
               this.dialogVisible=true;
            },
            removeDepFormDeps(p,deps,id){
                for (let i = 0; i < deps.length; i++) {
                    let d = deps[i];
                    if(d.id==id){
                        deps.splice(i,1);
                        if(deps.length==0){
                            p.isParent = false;
                        }
                        return;
                    }else {
                        this.removeDepFormDeps(d,d.children,id);
                    }
                }
            },
            deleteDep(data){
               if(data.isParent){
                   this.$message.error('该部门有子部门不能删除')
               }else {
                   this.$confirm('是否永久删除['+data.name+']部门, 是否继续?', '提示', {
                       confirmButtonText: '确定',
                       cancelButtonText: '取消',
                       type: 'warning'
                   }).then(() => {
                       this.deleteRequest('/system/basic/department/'+ data.id).then(resp=>{
                           if(resp){
                               this.removeDepFormDeps(null,this.deps,data.id)
                           }
                       })
                   }).catch(() => {
                       this.$message({
                           type: 'info',
                           message: '取消删除'
                       });
                   });

               }
            },
            initDeps(){
                this.getRequest('/system/basic/department/').then(resp=>{
                    if(resp){
                        this.deps = resp;
                    }
                })
            },
            filterNode(value, data) {
                if (!value) return true;
                return data.name.indexOf(value) !== -1;
            }
        }
    }
</script>

<style scoped>
.depBtn{
    padding: 2px;

}
</style>